Bat Removal & Exclusion
Bats will roost around chimneys and down peeks in the attic. Bat droppings or guano will be present under these roosts. Bat guano can be over a foot deep under roosts with urine stalactites twelve inches long. Guano or bat droppings on average are the size of rice crispy cereal with shiny flecks, which are undigested insect parts. It is recommended that you not handling bat droppings unless you have proper PPE (personal protection equipment) available to you for protection. There is a risk of contracting histoplasmosis or other diseases if improperly handled or disturbing bat droppings.
Guano and bats themselves attract ecto-parasites, like bat bugs which are similar to bed bugs. If the colony of 
bats are roosting in the attic and it warrants a bat guano cleanup. A professional can remove all the contaminated insulation, deodorize, and replace the insulation with new to keep the value and health of the structure. The pros also have specialized bat guano cleanup equipment they use to get the job done safely and efficiently.
Timing
Timing is critical for excluding bats. In the spring and summer, if a maternity colony has taken up residence, you will need to delay excluding the bats until August, when the young are able to fly. If you exclude the adult bats while the young are flightless, the young bats will needlessly starve to death and may create an odor problem. Frantic mother bats, excluded from their young may mistakenly get into your living area when trying to find a way back to the roost to care for the pups.
If you have a bat infestation in your house, it is wise to call a professional. It is very important that proper inspection techniques and exclusion methods be utilized. If not, you could end up with numerous adult and/or young bats being closed in your walls, eves, or attic, causing a large sanitation problem from dead bats or even having bats come out into your house with you and your family. In addition, they can perform repairs to your home or business so they cannot re-enter.
